St. Charles, on the banks of the Missouri River, developed through a mix of French, early American, and German influences and was carefully restored as a distinctive historic town. Main Street was recognized as a historic district in 1970 and includes Chouteau Mill, later the St. Charles Woolen Mill; the Western House, a popular inn for travelers on the Boone's Lick Road that was restored in the 1970s; Eckert's Tavern, where surveyors approved the official route of the Santa Fe Trail in 1827; Stone Row, which included the first state jail from 1821 to 1826; Odd Fellows Hall; and the Market House. The First Missouri State Capitol State Historic Site stands here, and Frontier Park along the Missouri River includes Katy Caboose #139 in the green and yellow scheme of the Katy Railroad's last days, the restored St. Charles Katy Depot, a Lewis and Clark sculpture, and the Lewis and Clark Boat House and Nature Center, which traces the journey of Lewis and Clark and the Corps of Discovery. Other notable places include the Academy of the Sacred Heart, established in 1818 by St. Philippine Duchesne; Frenchtown Historic District, which retains some of the town's early character; Lindenwood University, founded in 1827 and one of the oldest colleges west of the Mississippi River; and the Frenchtown Heritage Museum on Second Street, which documents the history of Frenchtown.